Auxiliary Power Supply Modules - Siemens SINAMICS S120 Manual

5.8

Auxiliary Power Supply Modules

5.8.1 General information
Hazardous electrical voltage
Hazardous voltages are present in certain parts of this equipment during operation of the
cabinet unit.
Only qualified personnel may work on the cabinet.
Such personnel must be thoroughly familiar with all the warnings and maintenance
procedures for the cabinet described in the documentation provided.
The successful and safe operation of this cabinet unit is dependent on correct transport,
proper storage and installation, as well as careful operation and maintenance.
National safety regulations must be observed.
5.8.2 Description
Note
Additional information
Refer to the layout diagrams and circuit diagrams provided on the enclosed customer DVD
for the arrangement of components and interfaces, and for wiring.
Auxiliary Power Supply Modules supply power to the auxiliary power supply system of the
SINAMICS S120 Cabinet Modules as well as to other external loads. The fans of the
SINAMICS S120 devices installed in the Cabinet Modules are some of the devices
connected to this auxiliary power supply system. In addition, the auxiliary power supply
system supplies the electronic modules with an external 24 V DC voltage. This is required
when the DC link is not charged, for example, in order to maintain PROFIBUS
communication.
The 230 V AC supply can also be fed in externally via an uninterruptible power supply (UPS)
and terminal -X46.
Cabinet Modules
Manual, 03/2013, A5E03263538A
DANGER
Cabinet Modules
5.8 Auxiliary Power Supply Modules
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